December weather forecastSaint James City, FL
December
Weather in December
December, the first month of the winter in Saint James City, is still a warm month, with an average temperature ranging between min 63.9°F (17.7°C) and max 73.9°F (23.3°C).Temperature
The shift to December signals an average high-temperature of a still warm 73.9°F (23.3°C), subtly varied from November's 77.5°F (25.3°C). An average low-temperature of 63.9°F (17.7°C) is common in Saint James City during the nights of December.Humidity
The most humid month is December, with an average relative humidity of 77%.Rainfall
In Saint James City, in December, during 5.5 rainfall days, 0.47" (12mm) of precipitation is typically accumulated. In Saint James City, during the entire year, the rain falls for 122 days and collects up to 8.98" (228mm) of precipitation.Ocean temperature
In Saint James City, in December, the average water temperature is 70.2°F (21.2°C).Note: A majority do not enjoy swimming in water at 70.2°F (21.2°C). The difficulty in controlling breathing increases progressively as the temperature dips below 69.8°F (21°C).
Daylight
With an average of 10h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 6:59 am and sunset at 5:35 pm. On the last day of the month, sunrise is at 7:16 am and sunset at 5:46 pm EST.
Sunshine
December has the least sunshine of the year, with an average of 6.7h of sunshine.UV index
The average daily maximum UV index in December is 6. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index, 6 in December, converts into the following recommendations:
Inhibit overexposure. Warding off sun damage is of utmost importance. Seek shade and limit direct Sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its peak, but be aware that not all shade structures provide complete sun protection. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Stay aware! UV radiation is magnified when reflecting off sand and water.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Saint James City, FL
- Average high temperature in December: 73.9°F
The warmest month (with the highest average high temperature) is August (88°F).
The month with the lowest average high temperature is January (70°F).
- Average low temperature in December: 63.9°F
The month with the highest average low temperature is August (81°F).
The coldest month (with the lowest average low temperature) is January (58.8°F).
Average pressure in December
Saint James City, FL
- Average pressure in December: 30.09"Hg
The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is September (29.95"Hg).
Average wind speed in December
Saint James City, FL
- Average wind speed in December: 9.4mph
The windiest months (with the highest average wind speed) are October and November (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.9mph).
Average humidity in December
Saint James City, FL
- Average humidity in December: 77%
The month with the highest relative humidity is December (77%).
The month with the lowest relative humidity is March (72%).
Average rainfall in December
Saint James City, FL
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is March (0.16").
Average rainfall days in December
Saint James City, FL
- Average rainfall days in December: 5.5 days
The month with the highest number of rainy days is September (19.5 days).
The month with the least rainy days is February (4.1 days).
Average sea temperature in December
Saint James City, FL
- Average sea temperature in December: 70.2°F
The best month for swimming (with the highest average sea temperature) is August (87.1°F).
The coldest month (with the lowest average sea temperature) is January (65.3°F).
Average daylight in December /
Average sunshine in December
Saint James City, FL
- Average daylight in December: 10h and 30min
The month with the longest days is June (Average daylight: 13h and 48min).
The month with the shortest days is December (Average daylight: 10h and 30min).
- Average sunshine in December: 6h and 42min
The month with the most sunshine is May (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 42min).
Average sunshine days in December
Saint James City, FL
- Average sunshine days in December: 23.1 days
The month with the most sunshine days is January (25.1 days).
The month with the least sunshine days is September (7.2 days).
Average UV index in December
Saint James City, FL
- Average UV index in December: 6
The months with the highest UV index are May, June, July, August and September (UV index 7).
The months with the lowest UV index are January and February (UV index 5).
Average cloud cover in December
Saint James City, FL
- Average cloud cover in December: 28
The month with the most cloud cover is January (Cloud cover 29).
The months with the least cloud cover are March and May (Cloud cover 23).
Average visibility in December
Saint James City, FL
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
